Air Fryer Acorn Squash (Brown Sugar & Cinnamon)

Air fryer acorn squash is my favorite shortcut for a classic fall side. Halve the squash, brush it with melted butter, brown sugar, and cinnamon, and air fry it cut side up at 375°F for 20 to 25 minutes. You get tender, spoonable squash with caramelized edges, and your oven stays free for the turkey, the stuffing, or whatever else is on the menu.

Quick Answer: How long do you cook acorn squash in the air fryer? Cook acorn squash halves at 375°F for 20 to 25 minutes, cut side up, until a fork slides easily into the thickest part. Squash larger than 2 pounds may need up to 30 minutes. For 1-inch wedges, see the sliced version below.

I made this acorn squash in my 5.8-quart basket-style air fryer, which comfortably held four squash wedges in a single layer. I learned that cutting the wedges evenly and brushing the edges with oil helps them caramelize without drying out.

Why You’ll Love This Recipe

• Naturally gluten-free. It’s also easy to make dairy-free with plant-based butter.
• Five ingredients. Squash, butter, brown sugar, cinnamon, and salt are all you need.
• About 10 minutes of hands-on time. The air fryer does the rest.
• Frees up your oven. This makes it a big help on Thanksgiving and other holidays.

Ingredients for Air Fryer Acorn Squash

The exact amounts are in the printable recipe card below.

• Acorn squash: One medium squash, about 1½ to 2 pounds. Check that the halves will fit in your basket before you start.
• Butter: Melted butter carries the seasoning and helps the edges brown. Salted or unsalted both work.
• Brown sugar: Light or dark. Dark brown sugar gives a deeper, more molasses-like flavor.
• Ground cinnamon: Adds warmth without taking over. A pinch of nutmeg is a nice addition.
• Kosher salt: A small amount balances the sweetness.

How to Pick a Good Acorn Squash

Look for a squash that feels heavy for its size, with hard, dull, dark green skin. A small orange patch where it rested on the ground is normal. A squash that’s mostly orange is past its prime and tends to be dry and stringy. Skip any with soft spots, cracks, or mold near the stem.

Uncut acorn squash keeps for about a month in a cool, dry spot like the pantry. You don’t need to refrigerate it.

How to Cut Acorn Squash Safely

Acorn squash is hard and round, so it can roll on the cutting board.

• Soften it (optional). Pierce the skin a few times with a knife and microwave the whole squash for 1 to 2 minutes. This makes cutting much easier.
• Trim the stem. Set the squash on a damp towel so it doesn’t slide, and cut off the stem.
• Cut in half. Using a large, sharp chef’s knife, cut through the squash from the stem end to the pointed end.
• Scoop out the seeds. A sturdy spoon or an ice cream scoop works well. Save the seeds for Air Fryer Roasted Acorn Squash Seeds, a crunchy snack that uses up what you’d otherwise throw away.
• Level the halves. Shave a thin slice off the rounded bottom of each half so it sits flat in the basket. Don’t cut all the way through, or the butter will leak out.

How to Make Air Fryer Acorn Squash

Step 1: Make the brown sugar butter. In a small bowl, stir together the melted butter, brown sugar, cinnamon, and salt.

Step 2: Brush the squash. Use a pastry brush to coat the cut surfaces and the inside of each half. Spoon any leftover butter mixture into the hollow centers.

Step 3: Air fry. Place the halves cut side up in the basket. Make sure they aren’t touching, so the air can circulate around them. Air fry at 375°F for 20 to 25 minutes.

Step 4: Check for doneness and serve. The squash is done when a fork slides easily into the thickest part of the flesh and the edges are golden. Spoon the melted butter from the center over the top before serving.

How to Tell When Acorn Squash Is Done

Don’t go by color alone. The edges can brown before the center is soft. Pierce the thickest part near the stem end with a fork. It should go in with no resistance, like a baked potato. If it doesn’t, add 3 to 5 minutes and check again.

Air Fryer Tips for the Best Acorn Squash

• Size matters more than the timer. A 1-pound squash may be done in 18 minutes, while a 2½-pound squash can take 30. Start checking early.
• Protect the sugar from burning. If your air fryer runs hot, cook the halves plain for 15 minutes, then brush on the brown sugar butter and cook 8 to 10 minutes more.
• Line the basket if you like. A perforated parchment liner catches drips. Add it only after preheating so it doesn’t blow into the heating element.
• Cook in batches if needed. Most 5- to 6-quart basket air fryers fit one medium squash, which is two halves.
• Air fryer ovens work too. Use the middle rack and expect to add a few minutes.

Sliced Version: Air Fryer Acorn Squash Wedges

Wedges cook faster and get more caramelized edges.

1. Cut the halved squash into 1-inch wedges, following the natural ridges.
2. Toss the wedges with the brown sugar butter.
3. Arrange them in a single layer and air fry at 375°F for [12–15] minutes, flipping halfway through, until tender and browned.

Leave the skin on. It helps the wedges hold their shape, and it softens enough to eat.

Flavor Variations

• Maple: Replace the brown sugar with 2 tablespoons of pure maple syrup, and finish with chopped toasted pecans.
• Savory garlic Parmesan: Replace the sugar and cinnamon with garlic powder, black pepper, and a pinch of thyme. Sprinkle with grated Parmesan for the last 2 minutes.
• Spiced honey: Use honey instead of brown sugar, and add a pinch of cayenne for a little heat.
• Stuffed: Fill the cooked halves with sausage, rice, or wild rice for a complete meal. If you like stuffed squash, my Air Fryer Stuffed Kabocha Squash uses the same idea with a savory filling.

What to Serve with Acorn Squash

The sweet, buttery flavor pairs well with savory mains:

• Holiday dinners: For a smaller Thanksgiving, serve it with my Air Fryer Boneless Turkey Breast Roast and Air Fryer Stuffing.
• Weeknights: It’s a good match for Air Fryer Italian Pork Chops, crispy Air Fryer Country Fried Pork Chops, or a slice of Air Fryer Turkey Meatloaf.
• A full vegetable plate: Add a batch of Air Fryer Roasted Vegetables.

Storing and Reheating

• Refrigerator: Let the squash cool, then store it in an airtight container for up to 3 to 4 days.
• Freezer: Scoop the cooked flesh out of the skin and freeze it in a freezer bag for up to 3 months. It’s best mashed or stirred into soup after thawing.
• Reheating: Air fry at 350°F for 5 to 8 minutes, until heated through. The microwave works too, but the edges lose their caramelized texture.

Air Fryer Acorn Squash FAQs

Can you cook a whole acorn squash in the air fryer? Yes, if it fits, but halves cook more evenly and in about half the time. A whole squash needs 35 to 45 minutes at 375°F, and it’s hard to tell when the center is done. Cutting it first is the better choice.

Do you need to peel acorn squash before air frying? No. The ridged skin is very hard to peel, and it holds the halves together while they cook. It softens enough to eat, especially on wedges, though many people just scoop out the flesh.

Do you put acorn squash cut side up or down in the air fryer? For this recipe, cut side up, so the brown sugar butter stays in the center and caramelizes. If you’re cooking it plain, cut side down for the first half of the cooking time helps it steam and soften faster.

Do I need to preheat my air fryer? It’s not required, but preheating for 3 minutes gives more consistent results. Without preheating, add a couple of minutes to the cooking time.

Why is my acorn squash still hard? Usually the squash was larger than average, or the basket was overcrowded. Keep cooking in 5-minute increments until a fork slides in easily.

Why is my acorn squash stringy or watery? It was probably overripe (mostly orange skin) or undercooked. Choose a heavy, dark green squash and cook it until fully fork-tender.

Is acorn squash healthy? Acorn squash is a good source of fiber, potassium, and vitamin C. The butter and brown sugar add calories, so use less of each, or try the savory version, for a lighter side.

Is acorn squash low FODMAP? Serving guidance for squash varies. Check the Monash University FODMAP app for current recommended portion sizes if you follow a low-FODMAP diet.

Can I make this recipe with butternut squash? Yes, but butternut halves are longer and denser, so they take longer to cook. Follow my Air Fryer Butternut Squash Halves for the right timing.

More Squash to Make in Your Air Fryer

Once acorn squash is in your rotation, there’s a lot more you can do with squash:

• Pasta substitute: Air Fryer Spaghetti Squash makes a great low-carb swap for pasta night.
• Crispy sides: Try Air Fryer Butternut Squash Fries, or twirl up some Air Fryer Butternut Squash Noodles.
• Different appliance: If your air fryer is busy, Instant Pot Acorn Squash gets the same tender result in your pressure cooker.
• More fall flavor: Air Fryer Roasted Pumpkin is another good option.
• Summer squash: Crispy Air Fryer Yellow Squash and Southern-style Air Fryer Fried Squash are reader favorites.

You’ll find even more ideas in my air fryer recipes and vegetable side dishes.